<template>
  <a-layout>
    <a-layout-content
        :style="{
        background: '#fff',
        padding: '24px',
        margin: 0,
        minHeight: '280px',
      }"
    >
      <a-row :gutter="24">
        <a-col :span="8">
          <p>
            <a-form layout="inline" :model="param">
              <a-form-item>
                <a-button type="primary" @click="handleQuery()">
                  查询
                </a-button>
              </a-form-item>
              <a-form-item>
                <a-button type="primary" @click="add"> 新增 </a-button>
              </a-form-item>
            </a-form>
          </p>
          <a-table
              v-if="level1.length > 0"
              :columns="columns"
              :row-key="(record) => record.id"
              :data-source="level1"
              :loading="loading"
              :pagination="false"
              size="small"
              :defaultExpandAllRows="true"
          >
            <template #name="{ text, record }">
              {{ record.sort }} {{ text }}
            </template>
            <template #action="{ record }">
              <a-space size="small">
                <a-button type="primary" @click="edit(record)" size="small"> 编辑 </a-button>
                <a-popconfirm
                    title="删除后不可恢复，确认删除?"
                    ok-text="是"
                    cancel-text="否"
                    @confirm="handleDelete(record.id)"
                >
                  <a-button type="primary" danger size="small"> 删除 </a-button>
                </a-popconfirm>
              </a-space>
            </template>
          </a-table>
        </a-col>
        <a-col :span="16">
          <p>
            <a-form layout="inline" :model="param">
              <a-form-item>
                <a-button type="primary" @click="handleSave">
                  保存
                </a-button>
              </a-form-item>
            </a-form>
          </p>
          <a-form
              :model="doc"
              layout="vertical"
          >
            <a-form-item>
              <a-input v-model:value="doc.name" placeholder="名称" />
            </a-form-item>
            <a-form-item>
              <a-tree-select
                  v-if="treeSelectData !== null"
                  v-model:value="doc.parent"
                  style="width: 100%"
                  :dropdown-style="{ maxHeight: '400px', overflow: 'auto' }"
                  :tree-data="treeSelectData"
                  placeholder="请选择父文档"
                  tree-default-expand-all
                  :replaceFields="{ title: 'name', key: 'id', value: 'id' }"

              >
              </a-tree-select>
            </a-form-item>
            <a-form-item>
              <a-input v-model:value="doc.sort" placeholder="顺序" />
            </a-form-item>
            <a-form-item>
              <a-button type="primary" @click="handlePreviewContent">
                <EyeOutlined /> 内容预览
              </a-button>
            </a-form-item>
            <a-form-item>
              <div id="content"></div>
            </a-form-item>
          </a-form>
        </a-col>
      </a-row>
      <a-drawer width="900" placement="right" :closable="false" :visible="drawerVisible" @close="onDrawerClose">
        <div class="wangeditor" :innerHTML="previewHtml"></div>
      </a-drawer>
    </a-layout-content>
  </a-layout>
</template>

<script lang="ts">
import { defineComponent, onMounted, ref, createVNode } from "vue";
import axios from "axios";
import { message, Modal } from "ant-design-vue";
import { ExclamationCircleOutlined } from "@ant-design/icons-vue";
import { Tool } from "@/util/tool";
import { useRoute } from "vue-router";
import E from "wangeditor";

export default defineComponent({
  name: "AdminDoc",
  setup() {
    const route = useRoute();
    const param = ref();
    param.value = {};
    const docs = ref();
    const loading = ref(false);
    let editor:any ;

    const columns = [
      {
        title: "名称",
        dataIndex: "name",
        slots: { customRender: "name" }
      },
      {
        title: "父文档",
        dataIndex: "parent",
      },
      {
        title: "顺序",
        dataIndex: "sort",
      },
      {
        title: "Action",
        dataIndex: "action",
        slots: { customRender: "action" },
      },
    ];

    /**
     * 一级文档树，children属性就是二级文档
     * [{
     *  id: "",
     *  name: "",
     *  children: [{
     *    id: "",
     *    name: "",
     *  }]
     * }]
     */
    const level1 = ref(); // 一级文档树，children属性就是二级文档
    level1.value =[]

    /**
     * 数据查询
     */
    const handleQuery = () => {
      loading.value = true;
      // 注意：axios.get 有两种方式传参，一：路由拼接 二：参数 { params:  } 这个 key 必须为 params
      axios.get("/doc/all/"+route.query.ebookId).then((res) => {
        loading.value = false;
        const data = res.data;
        if (data.success) {
          docs.value = data.content;
          console.log("原始数组：", docs.value);

          level1.value = [];
          level1.value = Tool.array2Tree(docs.value, 0);
          console.log("树形结构：", level1);

          // 父文档下拉框初始化，相当于点击新增
          treeSelectData.value = Tool.copy(level1.value) || [];
          // 为选择树添加一个"无"
          treeSelectData.value.unshift({id: 0, name: '无'});
        } else {
          message.error(data.message);
        }
      });
    };

    /**
     * 表单
     */
    // 因为树选择组件的属性状态，会随当前编辑的节点而变化，所以单独声明一个响应式变量
    const treeSelectData = ref();
    treeSelectData.value = [];
    const doc = ref();
    doc.value = {
      ebookId: route.query.ebookId,
    };
    // const modalVisible = ref(false);
    const modalLoading = ref(false);


    const handleSave = () => {
      modalLoading.value = true;
      doc.value.content = editor.txt.html();
      if (editor == null){
        createEditor();
      }else {
        editor.destroy();//这里做了一次判断，判断编辑器是否被创建，如果创建了就先销毁。
        createEditor();
      }
      axios.post("/doc/save", doc.value).then((res) => {
        modalLoading.value = false;
        const data = res.data;
        if (data.success) {
          // modalVisible.value = false;
          message.success("保存成功！");

          // 重新加载列表
          handleQuery();
        } else {
          message.error(data.message);
        }
      });
    };

    /**
     * 将某节点及其子孙节点全部置为disabled
     */
    const setDisable = (treeSelectData: any, id: any) => {
      // 遍历数组，即遍历某一层节点
      treeSelectData.some((item:any) => {
        if (item.id === id) {
          // 如果当前节点就是目标节点
          // 将目标节点置为 disabled
          item.disabled = true;

          // 遍历所有子节点，将所有子节点全部加上disabled
          const children = item.children;
          if (Tool.isNotEmpty(children)) {
            children.forEach((item:any) => {
              setDisable(children, item.id);
            });
          }

          return true;
        } else {
          // 如果当前节点不是目标节点，则到其子节点再找找看
          const children = item.children;
          if (Tool.isNotEmpty(children)) {
            setDisable(children, id);
          }
        }
      });
    };

    const deleteIds: Array<String> = [];
    const deleteNames: Array<String> = [];
    /**
     * 查找整根树枝
     */
    const getDeleteIds = (treeSelectData: any, id: any) => {
      // 遍历数组，即遍历某一层节点
      treeSelectData.some((item:any) => {
        if (item.id === id) {
          // 如果当前节点就是目标节点
          // 将目标节点id push 到数组 ids 中
          deleteIds.push(id);
          deleteNames.push(item.name);

          // 遍历所有子节点，将所有子节点id 全部 push 到数组 ids 中
          const children = item.children;
          if (Tool.isNotEmpty(children)) {
            children.forEach((item:any) => {
              getDeleteIds(children, item.id);
            });
          }

          return true;
        } else {
          // 如果当前节点不是目标节点，则到其子节点再找找看
          const children = item.children;
          if (Tool.isNotEmpty(children)) {
            getDeleteIds(children, id);
          }
        }
      });
    };
    /**
     * 内容查询
     */
    const handleQueryContent = () => {
      axios.get("/doc/find-content/" + doc.value.id).then((res) => {
        const data = res.data;
        if (data.success) {
          editor.txt.html(data.content);
        } else {
          message.error(data.message);
        }
      });
    };

    /**
     * 编辑
     */
    const edit = (record: any) => {
      // modalVisible.value = true;
      // 清空富文本框
      editor.txt.html("");

      doc.value = Tool.copy(record);
      handleQueryContent();
      // 不能选择当前节点及其所有子孙节点作为父节点，会使树断开
      treeSelectData.value = Tool.copy(level1.value);
      // 为选择树添加一个"无"
      treeSelectData.value.unshift({ id: 0, name: "无" });

      setDisable(treeSelectData.value, record.id);


    };

    /**
     * 新增
     */
    const add = () => {
      // 清空富文本框
      editor.txt.html("");
      // modalVisible.value = true;
      // doc.value = {
      //   ebookId: route.query.ebookId,
      // };
      //解决无数据新增报错【unshift未定义】
      treeSelectData.value = Tool.copy(level1.value) || [];

      // 为选择树添加一个"无"
      treeSelectData.value.unshift({id: 0, name: '无'});

    };
    const createEditor = () => {
      editor = new E("#content");
      editor.config.zIndex = 0;
      editor.create();
    };

    /**
     * 删除
     */
    const handleDelete = (id: number) => {
      // 清空数组，否则多次删除时，数组会一直增加
      deleteIds.length = 0;
      deleteNames.length = 0;

      getDeleteIds(level1.value, id);
      axios.delete("/doc/delete/" + deleteIds.join(",")).then((res) => {
        const data = res.data;
        if (data.success) {
          // 重新加载列表
          handleQuery();
        }
      });
      Modal.confirm({
        title: "重要提醒",
        icon: createVNode(ExclamationCircleOutlined),
        content:
            "将删除：【" +
            deleteNames.join("，") +
            "】删除后不可恢复，确认删除？",
        onOk() {
          // console.log(ids)
          axios.delete("/doc/delete/" + deleteIds.join(",")).then((res) => {
            const data = res.data; // data = commonResp
            if (data.success) {
              // 重新加载列表
              handleQuery();
            } else {
              message.error(data.message);
            }
          });
        },
      });
    };
    // ------------------富文本预览---------------
    const drawerVisible = ref(false);
    const previewHtml = ref();
    const handlePreviewContent = () => {
      const html = editor.txt.html();
      previewHtml.value = html;
      drawerVisible.value = true;
    }
    const onDrawerClose = () => {
      drawerVisible.value = false;
    }

    onMounted(() => {

      handleQuery();
      createEditor();

    });

    return {
      // docs,
      level1,
      columns,
      loading,
      param,

      edit,
      add,
      handleDelete,
      handleQuery,

      handleSave,
      doc,

      treeSelectData,
      drawerVisible,
      previewHtml,
      handlePreviewContent,
      onDrawerClose
    };
  },
});
</script>

<style scoped>
img {
  width: 50px;
  height: 50px;
}
</style>
